Migrate to jfrog/boost

[attiasas]

ci(workflows): migrate test workflow from jfrog-fastci/fastci to jfrog/boost

Summary

This change switches the GitHub Actions workflow used for CI optimization in .github/workflows/test.yml from jfrog-fastci/fastci@v0 to jfrog/boost@v0. Inputs tied to the old FastCI action (fastci_otel_token / FASTCI_TOKEN, install_bashi, and enabled_optimizations for go_test_junit_optimization) are removed so the workflow matches the new action’s interface.

Changes

• .github/workflows/test.yml: In every job that ran “Start FastCI Optimization,” replace uses: jfrog-fastci/fastci@v0 with uses: jfrog/boost@v0.
• Inputs: Keep only github_token: ${{ secrets.GITHUB_TOKEN }} for that step; drop fastci_otel_token, install_bashi, and enabled_optimizations everywhere they appeared (including the variant that had install_bashi: true on the first job).